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EarthExplorer Help Documentation
Version 2.0
September 2013
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Document History
Number Date and Sections Notes
1 February 2011 Original document 0.1
2 April 2011 Updated with comments/table of contents
3 June 2011 Updated with comments from LTA staff
4 July 2011 Updated graphics, fomatting.
5 September 2011 Updated to guidelines on user docs and review by LDCM
6 September 2012 Updated login/registration
7 September 2013 Update Figure 37
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Table of contents Document History .................................................................................................................. ii Table of contents .................................................................................................................. iii Table of Figures ................................................................................................................... iv I. Introduction ................................................................................................................... 1
Key Features ........................................................................................................... 1 A. System/Browser requirements ................................................................................ 1 B.
II. User Interface................................................................................................................ 3 Header/Footer Elements ......................................................................................... 3 A. Body ........................................................................................................................ 5 B.
III. Registration and Profile ............................................................................................ 10 Registration ........................................................................................................... 10 A. Login ..................................................................................................................... 17 B. Profile .................................................................................................................... 18 C.
IV. Perform a Search ..................................................................................................... 23 Search Criteria Tab ............................................................................................... 23 A. Select Data Set(s): ................................................................................................ 42 B. Enter Additional Criteria: ....................................................................................... 45 C. View Search Results ............................................................................................. 49 D.
Appendix ............................................................................................................................ 73
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Table of Figures Figure 1 - EarthExplorer User Interface ................................................................................ 3 Figure 2 - Header ................................................................................................................. 3 Figure 3 - EarthExplorer Menu Bar....................................................................................... 4
Figure 4 - Footer .................................................................................................................. 5 Figure 5 - Body ..................................................................................................................... 6 Figure 6 - Google Map Navigation Controls ......................................................................... 7 Figure 7 - Custom Location Features ................................................................................... 8 Figure 8 - Registration ........................................................................................................ 11
Figure 9 - Registration Login .............................................................................................. 11 Figure 10 - User Affiliation/Data Usage Form ..................................................................... 13 Figure 11 - Address ............................................................................................................ 16
Figure 12 - Confirmation Page ........................................................................................... 17 Figure 13 - Login ................................................................................................................ 17 Figure 14 - Login/Password ............................................................................................... 18 Figure 15 - Menu Bar Items ................................................................................................ 18
Figure 16 - Edit User Profile ............................................................................................... 19 Figure 17 - Interface Options .............................................................................................. 19
Figure 18 - Data Set List .................................................................................................... 20 Figure 19 - Sort Order ........................................................................................................ 20 Figure 20 - Metadata View ................................................................................................. 20
Figure 21 - Saved Criteria .................................................................................................. 21 Figure 22 - Standing Request ............................................................................................ 21
Figure 23 - Order Tracking ................................................................................................. 22 Figure 24 - EarthExplorer Search Tabs .............................................................................. 23
Figure 25 - Point Search .................................................................................................... 24 Figure 26 - Line Search ...................................................................................................... 24
Figure 27 - Rectangle Search ............................................................................................ 25 Figure 28 - Polygon Search ................................................................................................ 26 Figure 29 - Circular Polygon Tool ....................................................................................... 27
Figure 30 - Example circle area of interest ......................................................................... 27 Figure 31 - Clear Selection ................................................................................................. 28 Figure 32 - Add Map to Selection ....................................................................................... 28
Figure 33 - Add Map to Selection Example ........................................................................ 28 Figure 34 - Enter Address .................................................................................................. 29 Figure 35 - Enter Address Location .................................................................................... 29 Figure 36 - Enter Latitude/Longitude .................................................................................. 30 Figure 37 - Enter Latitude/Longitude Location ................................................................... 30
Figure 38 - Place Name ..................................................................................................... 31 Figure 39 - Place Name - Multiple Options ......................................................................... 31
Figure 40 - Place Name - Multiple Option - Selected Place ............................................... 32 Figure 41 - Path/Row ......................................................................................................... 33 Figure 42 - Path/Row Location ........................................................................................... 34 Figure 43 - US Feature Place name Search ...................................................................... 35 Figure 44 - US Feature Place name Search Results ......................................................... 35 Figure 45 - US Feature Place name Selected .................................................................... 36 Figure 46 - Add Coordinate ................................................................................................ 37
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Figure 47 - Add New Coordinate ........................................................................................ 37 Figure 48 - Add New Coordinate Location ......................................................................... 37
Figure 49 - Delete or Edit Coordinates ............................................................................... 38 Figure 50 - Predefined Area - Add Shape .......................................................................... 38 Figure 51 - Predefined Search Area ................................................................................... 39 Figure 52 - Upload ESRI Shapefile .................................................................................... 39 Figure 53 - Upload KML/KMZ file ....................................................................................... 40
Figure 54 - Example uploaded KML file ............................................................................. 40 Figure 55 - KML Example ...................................................... Error! Bookmark not defined. Figure 56 - Dates Selected ................................................................................................. 42 Figure 57 - Number of records to return ............................................................................. 42 Figure 58 - EarthExplorer Search Tabs – Data Sets .......................................................... 43
Figure 59 - Data Set Selection Expandable View ............................................................... 43 Figure 60 - Dataset mouse over example .......................................................................... 44 Figure 61 - Dataset with cost of reproduction icon ............................................................. 44
Figure 62 - Data Set Prefilter .............................................................................................. 44 Figure 63 - EarthExplorer Additional Criteria Tab ............................................................... 45 Figure 64 - Example Additional Criteria form ...................................................................... 46
Figure 65 - Data Set Criteria forms .................................................................................... 47 Figure 66 - Unique Criteria Form ........................................................................................ 48
Figure 67 - EarthExplorer Results Tab ............................................................................... 49 Figure 68 - Example Results .............................................................................................. 49 Figure 69 - Search Result Control ...................................................................................... 50
Figure 70 - Show All Footprints .......................................................................................... 51 Figure 71 - Show All Browse .............................................................................................. 51
Figure 72 - Browse Opacity Example ................................................................................. 52 Figure 73 - Select Data Set Results ................................................................................... 53
Figure 74 - Example Search Results .................................................................................. 54 Figure 75 - Example Scene Level Results ......................................................................... 55 Figure 76 - Footprint Overlay ............................................................................................. 55
Figure 77 - Browse Overlay ................................................................................................ 56 Figure 78 - Login before downloading ................................................................................ 56
Figure 79 - Download Options Dialog................................................................................. 57 Figure 80 - Download Scene .............................................................................................. 57 Figure 81 - Download Scene Dialog ................................................................................... 57
Figure 82 - Bulk Download - Added to Item Basket ............................................................ 58 Figure 83 - Bulk Download Item Basket ............................................................................. 58 Figure 84 - Bulk Download Order Review .......................................................................... 59 Figure 85 - Bulk Download Validation ................................................................................ 59 Figure 86 - Order Scene ..................................................................................................... 60
Figure 87 - Item Basket Example ....................................................................................... 60 Figure 88 - Item Basket ...................................................................................................... 61 Figure 89 - Checkout Summary ......................................................................................... 61 Figure 90 - Roll View .......................................................................................................... 62
Figure 91 - Example Scene Level Results ......................................................................... 63 Figure 92 - Show Browse and Metadata ............................................................................ 63 Figure 93 - Browse and Metadata View ............................................................................. 64 Figure 94 - Multiple Browse Display Example .................................................................... 65 Figure 95 - Open New Window – Display Browse .............................................................. 66 Figure 96 - FGDC Format .................................................................................................. 66
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Figure 97 - Default Search Results Returned = 100 ........................................................... 67 Figure 98 - Total Search Results of query = 2570 .............................................................. 67
Figure 99 - Search Criteria - Number of records to return .................................................. 67 Figure 100 - Export Options ............................................................................................... 68 Figure 101 - Submit Standing Request .............................................................................. 70 Figure 102 - Standing Request Form ................................................................................. 71 Figure 103 - Manage Criteria ............................................................................................. 71
Figure 104 - Standing Request .......................................................................................... 72
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I. Introduction EarthExplorer (http://earthexplorer.usgs.gov) provides online search, browse display, metadata export, and data download for earth science data from the archives of the U.S. Geological Survey (USGS). EarthExplorer provides an enhanced user interface using state-of-the art JavaScript libraries, Hypertext Preprocessor (PHP), and the advanced Oracle spatial engine.
Key Features A.
Key features in EarthExplorer include:
Fast, geospatial search engine
Map viewer for viewing overlay footprints and browse overlays
Simple, fast Graphical User Interface (GUI)
Data access tool to search and discover data
Textual query capability
Keyhole Markup Language (KML) export capability to interface with Google Earth
Save or export queries, results, and map overlay for reuse
Request on-demand products
Access to browse images from standard products
User authentication service for access to specialized datasets and tools
Access to Landsat Data Continuity Mission (LDCM) quality band data
Standard product downloads
User notifications of new acquisitions and available products through subscription
services
Updated software code base supporting JavaScript and PHP
System/Browser requirements B.
The following are the hardware and software requirements for using EarthExplorer:
Hardware Requirements – Windows: o 233 Gigahertz (GHz) processor - 2GHz or better recommended
o Minimum of 256 Megabyte (MB) Random Access Memory (RAM) – 4
Gigabyte (GB) recommended
o Minimum of 20GB of free space - 100GB recommended
o Display capable of 800x600 with 256 colors and 32MB of video RAM
o Mouse
o Keyboard
Hardware Requirements – Apple Mac: o Intel x86 or PowerPC G3, G4, or G5 - 2GHz or better recommended
o Minimum of 256MB RAM - 4GB recommended
o Minimum of 20GB of free space - 100GB recommended
o Display capable of 800x600 with 256 colors and 32MB of video RAM
o Mouse
o Keyboard
Support handheld and tablet devices via browsers
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Network Requirements: o Broadband connection 15 Megabit per Second (Mbps)
o 3G network impacts display speed
Software Requirements: o Operating System: Windows XP, Windows Vista, Windows 7, Windows
Server 2000, Windows Server 2003, Windows Server 2008
o Mac OS X
o Unix
o Linux
o Solaris
Browsers supported: o Internet Explorer (7.x, 8.x, 9.x)
o Firefox (3.x, 4.x)
o Chrome (10.x)
o Opera (10.x)
o Safari (5.x)
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II. User Interface The EarthExplorer user interface provides the overall capability for users to interact with the EarthExplorer components and services. The EarthExplorer user interface (Figure 1) is composed of the following key elements:
Standard USGS header/footer elements
EarthExplorer menu bar
Body
Figure 1 - EarthExplorer User Interface
Header/Footer Elements A.
The EarthExplorer header/footer elements are based on the USGS Visual Identification Policy standard guidelines. The EarthExplorer client is compliant with Section 508 guidelines.
Header 1.
The EarthExplorer client header (Figure 2) is located at the top of the web page. The header is common across all web pages in EarthExplorer but may be different based on your user role or „branding‟ applied to the EarthExplorer client.
Figure 2 - Header
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Elements of the header include:
USGS Logo (upper left corner) reflects the relevance of the Bureau's work in
today's world and communicates USGS‟s purpose to the public.
USGS Links (upper right corner) reflect links to the USGS website, USGS
contact information, and the USGS search tool.
Title Bar is a standard bar describing the website; in this case,
„EarthExplorer‟.
EarthExplorer Menu Bar.
EarthExplorer Menu Bar 2.
The EarthExplorer menu bar (Figure 3) is directly below the header. The EarthExplorer menu bar supplies a common starting point to access additional functionality, options, and preferences for the EarthExplorer client via dropdown menus.
Figure 3 - EarthExplorer Menu Bar
The common menu items in the menu bar include:
Home – Returns you to a common starting point within the application.
System Message – Provides links and information regarding system status
and upcoming events/changes.
Login – Provides a link to the EarthExplorer Login.
Register – Provides a link to the EarthExplorer Registration Service.
Feedback – Provides a link to the feedback form.
Help – Provides information about EarthExplorer.
Additional menu bar items display when you register or log in. Some of these additional features include:
Profile – Provides access to your profile preferences and allows you to
customize your profile.
Save Criteria – Allows you to save your search criteria for future searches.
Load Favorite – Allows you to load/apply a saved search criteria.
Manage Criteria – Allows you to modify previously saved search criteria.
These options are described in further details in the EarthExplorer Profile (Section III).
Footer 3.
The EarthExplorer client footer (Figure 4) is located at the bottom of the web page. The footer is common across all web pages in EarthExplorer but may be slightly different based on your user role or „branding‟ applied to the EarthExplorer client.
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Figure 4 - Footer
The common menu items in the footer include:
Accessibility – Provides a link to the USGS Accessibility Policy (Section 508).
The USGS Accessibility Policy ensures that all electronic and information
technology developed, procured, maintained, or used by the USGS is
accessible to people with disabilities.
FOIA – Provides a link to the U.S. Geological Survey Freedom of Information
Act (FOIA) Electronic Reading Room. FOIA requests for a copy of USGS
records can be made by any individual or public/private organization other
than a Federal agency.
Privacy – Provides a link to the USGS Privacy Policies. This information
identifies USGS and the Department of Interior (DOI) privacy policies.
Policies and Notices – Provides a link to the USGS Policies and Important
Notices website. This information describes the principal policies and other
important notices that govern information posted on USGS websites.
Google Maps API Disclaimer – Provides a link to the Google Maps API
Disclaimer. This information outlines the Google Map Application
Programming Interface (API) terms and conditions for using the Google Map
service.
Body B.
The body (Figure 5) includes the main EarthExplorer capabilities and is composed of the Data Search Functions and the Google Map components.
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Figure 5 - Body
Search Criteria 1.
The EarthExplorer Data Search component is located on the left side of the EarthExplorer body element. The Data Search components are divided among 4 tabs and allow users to enter search criteria, select datasets to query, enter additional criteria, and review results in a tabular window. Additional details on the Data Search component are provided in the „Perform a Search‟ in section IV.
Google Map 2.
The Google Map component is located on the right side of the EarthExplorer body element. The Google Map application interface embeds Google Maps within the EarthExplorer client. The Google Map is a useful tool for defining a search area and for verifying that results fall in the area of interest. Before using the Google Map component, you should be familiar with the navigation and location features provided in the Google Map interface for EarthExplorer.
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Figure 6 - Google Map Navigation Controls
Use the following controls to navigate Google Maps (Figure 6):
Pan Control – Click the appropriate arrow to move the view north, south, east
or west.
Street View – Click and drag to navigate to the street-level view of the
interested area.
Zoom – Click the plus sign (+) to zoom in to the center of the map; click the
minus sign (–) to zoom out.
Zoom Slider – Drag the zoom slider up/down to zoom in or out incrementally.
Pan – Click and drag the map to the desired location or view.
Use Page Up, Page Down, Home, and End for faster scrolling up, down, left,
and right, respectively.
Press Control and click the plus sign (+) to zoom in or press Control and click
the minus sign (–) to zoom out.
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The Google Map component provides the following custom location features (Figure 7) to aid in locating point of interest.
Figure 7 - Custom Location Features
Google Maps offers the following location features:
(1) Coordinates – Coordinate values update as you move the mouse on the map interface.
(2) Options Auto-Center – Centers the map on the display Polygon – Allows entering search criteria by polygon Circle – Allows entering search criteria by using a circle radius
(3) Overlays – Displays a grid based on the selection
1
2 3 4
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Decimal – Overlays a decimal degree grid over the map interface. Click to turn on and off.
DMS – Overlays Degrees, Minutes, Seconds (DMS) grid over the map interface. Click to turn on and off.
(4) Map/Satellite – Toggles between the Map View and the Satellite View. Map View:
o Terrain – Shows basic topographic features.
Satellite View:
o 45° – Zooms to special 45° imagery for certain locations.
o Labels – Displays feature labels.
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III. Registration and Profile Registered users can use all of EarthExplorer‟s features, including saving search criteria, downloading data, and accessing subscription services. The USGS EarthExplorer system requires users/customers to register to download data. The information gathered from the registration process is not distributed to other organizations and is only used to determine trends in data usage and for certain orders. The same login can be used for the USGS Global Visualization Viewer (GloVis) and USGS Hazards Data Distribution System (HDDS) systems. To ensure privacy and security, all information entered in the EarthExplorer Registration Service uses Hypertext Transfer Protocol with Secure Sockets Layer (HTTPS) protocol. This privacy ensures that the information is encrypted from your browser to the EarthExplorer application. A new policy implemented on October 1, 2012 requires all users to update their registration information. There have been additional items added to the registration questionnaire which will provide the USGS with information required to make future decisions for improving the user access experience. After the initial update, users will be prompted every other year to re-verify the user profile. The EarthExplorer Registration interface consists of the following key elements:
Registration
Login
Profile
User interface features in the registration service include the following:
Values in Bold Black with an asterisk „*‟ are required values.
The „Continue‟ button performs an edit check; if the values entered pass the edits for
that form, the information is saved and advances to the next page in the registration
process.
An invalid entry produces a popup message explaining the error.
The „Cancel‟ button returns to the initial registration page without saving any
information.
The „Reset‟ button clears all information from the current form.
Registration A.
To register, select the „Register‟ menu item from EarthExplorer menu.
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Figure 8 - Registration
Registration Login Page 1.
The Registration process (Figure 8) requires users to create a username and password, select a secret question, and type a secret answer. Once registered with EarthExplorer, only the „Login‟ process is required.
Figure 9 - Registration Login
Select „Register‟
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The Registration Login page (Figure 9) requires users to type the following values:
*Username (Required) – Type preferred username.
*Password (Required) – Type a password. The password must be between
8 and 16 characters long and contain at least one alphabetic character and
one numeric character.
*Confirm Password (Required) – Type the password entered in the previous
password field.
Cancel – Returns to the initial registration page without saving any information
Continue – Performs a check; if the values entered are valid, the information is saved and you advance to the User Affiliation/Data Usage form.
User Affiliation/Data Usage Information Page 2.
The User Affiliation/Data Usage Information page (Figure 10) allows users to enter affiliation and identify uses of the data. This information is used to gather statistics on data applications and types of organizations using remotely-sensed data.
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Figure 10 - User Affiliation/Data Usage Form
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The User Affiliation/Data Usage (Figure 10) form identifies affiliation along with the primary and secondary uses of the data. The USGS uses this information to determine data usage trends, which provide target specific user groups. The User Affiliate/Data Usage page requires users to type the following values:
*Sector: Indicates the organization affiliation (Required)
U.S. Federal Government
U.S. State/Provincial/Department Government
U.S. Local Government
Tribe/Nation/Indigenous Group
Non-U.S. Federal/National Government
Academic Institution
Non-profit Organization
Private Business
General Public
Other
Additional Department/Agency: Based on the value selected above, additional
information may be required, such as:
*Department (Required)
*Agency (Required)
User of remotely sensed data: *Which of the following characterizes you as a
user of remotely sensed data from USGS? Select the characteristic that
identifies your role as a user of remote sensed data. (Required)
Data provider
Product developer
Technical user
End user
Manager
Other (please specify)
*Data Use: Does your work use remotely sensed data from the USGS (Y/N)
(Required)? If yes, select the operational percentage that identifies the
percentage used for operational support.
*Primary application: Select the primary application for which you have used
remotely sensed data from the USGS in the past year. Select one (1) item
from the drop down item box. (Required)
*Secondary use of data: In addition to the primary application, in what other
areas have you used remotely sensed data from USGS in the past year?
(Please check all that apply.) (Required)
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Other Application – If none of the secondary values match, enter the other
application(s) of the data.
*Distribution characteristics: Over the next year, approximately how much of
the remotely sensed data you acquire from USGS will you distribute to others
to use as opposed to using it yourself? (Please select only one answer.)
(Required)
*Importance of free and open access to data: Over the next year, how
important will free and open access to remotely sensed data from USGS be
to conducting your work? (Please select only one answer.) (Required)
Cancel – Returns to the initial login page without saving any information. Continue – Performs validation of the information entered; if the values entered are valid, the information is saved and you advance to the User Affiliation/Data Usage form.
Address page 3.
Type the address information in the Address page (Figure 11). The address information is used only for contact information; however, some data products require shipping information to deliver products. Address information is not shared with any commercial or other government agencies. Please refer to the USGS/DOI Privacy Policy concerning how this information is used.
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Figure 11 - Address
The Address page requires you to type the following values:
*First Name (Required) – First name of the user.
*Last Name (Required) – Last name of the user.
Company/Organization – Affiliated company or organization.
*Address 1 (Required) – Address line 1.
Address 2 – Address line 2.
*Country (Required) – Country you are from.
*City (Required) – City where you reside.
*State/Province (Required) – State/province where you reside.
*Zip/Postal Code (Required) – Zip code or postal code.
*E-mail (Required) – Email address.
Alternative E-mail – Additional email address.
*Telephone (Required) – Primary telephone number.
Fax – Fax number.
Confirmation 4.
The Confirmation page (Figure 12) displays after successful registration. Click „Return to the page where I registered‟ to return to the page you started the registration process.
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Figure 12 - Confirmation Page
After registering for the first time, you are automatically logged in to EarthExplorer.
Login B.
The Login page allows users to log in to EarthExplorer. A registered user can use all of EarthExplorer's features, including saving search criteria, downloading data, and accessing subscription services.
Login Process 5.
a. To log in, select the „Login‟ menu item from the EarthExplorer menu (Figure 13). (Note: After registering the first time, you are automatically logged in.)
Figure 13 - Login
b. Type the username and password and then click the „Sign In‟ button (Figure
14).
Select „Login‟
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Figure 14 - Login/Password
c. Click the link to receive directions for updating the password.
d. Once logged in, additional items appear in the main menu bar:
Figure 15 - Menu Bar Items
Logout Process 6.
To log out of EarthExplorer, click „Logout‟ in the EarthExplorer menu.
Profile C.
The Profile menu allows users to modify profile information.
Profile Home 7.
The „Profile Home‟ option allows users to modify profile information (Figure 16). The Username cannot be modified.
a. Change Password – View and change a password b. Contact Address – View and modify contact address c. User Affiliation – View and modify your affiliation
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Figure 16 - Edit User Profile
Click the ‟Edit‟ button to modify the desired information.
Interface Options 8.
The „Interface Options‟ page allows users to modify information associated with the overall system interface. The following options modify the overall EarthExplorer interface:
d. Interface options (Figure 17) – Modifies tool tips, the number of metadata results per page, allow standing requests and other specific system options. For some options, only the Application Administrator can modify.
Figure 17 - Interface Options
e. Data Sets page (Figure 18) – Modifies the list of datasets shown in the Data
Sets Component.
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Figure 18 - Data Set List
f. Sort Order page (Figure 19) – Modifies the sort order for each dataset.
Figure 19 - Sort Order
g. Metadata View page (Figure 20) – Modifies the detailed metadata view for
each dataset.
Figure 20 - Metadata View
Saved Criteria 9.
The „Saved Criteria‟ option (Figure 21) – Modifies the saved criteria options from previous searches.
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Figure 21 - Saved Criteria
In Figure 21, the search criterion was saved with the name „Search_Site_1‟. Any information can be entered when saving the search criteria.
Selecting the favorite box icon saves the search criteria to the favorites list
The load criteria icon loads the search criteria automatically to EarthExplorer
The delete icon removes the search criteria from the saved criteria
Standing Request 10.
Click the „Standing Request‟ (Figure 22) to view a list of entered standing requests.
Figure 22 - Standing Request
The Standing Request function sends a notification via email when a new acquisition matches the search criteria for the requested dataset. The metadata and browse can be reviewed for the returned scenes. See Section IV, D, 3, Standing Request for more details on the Standing Request function.
Order Tracking 11.
Click the „Order Tracking‟ (Figure 23) option to display the list of orders that have been placed.
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Figure 23 - Order Tracking
Click the order number to show the order details, the products ordered, and the current status of each item ordered.
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IV. Perform a Search EarthExplorer allows users to search, download, and order data held in USGS archives through a number of query options. EarthExplorer uses tabs in the search application to move through each portion of the process. The EarthExplorer search process/component is divided into four main areas (Figure 24):
Search Criteria Tab – Provides the interface for entering various search options.
Data Sets Tab – Provides the interface for selecting the datasets to be searched.
Additional Criteria Tab – Provides an interface for entering additional search criteria
specific to the selected datasets.
Results Tab – Provides the interface for displaying a textual and graphical view of
the query results.
Figure 24 - EarthExplorer Search Tabs
Search Criteria Tab A.
The Search Criteria tab provides a location to enter search criteria for an area of interest. Users have the option to either type the location criteria via the textual information component or with the Google Map interface. The search criteria options include:
Google Map Interface – Enter the area of interest through the Google Map
interface
Address/Place – Type an address or place name
Area Selected – Enter coordinates to define an area of interest. The area
selected is updated as changes are made
Predefined Area – Select from a list of predefined areas for a query
Upload shapefile or KML file – Update a ESRI shapefile or KML file as the query
area
Dates Selected – Enter a date or date range
Number of records to return – Modify the number of scenes returned from a
search.
Enter Area of Interest Search using Google Map Interface 1.
Using the Google Map interface, enter the geospatial area of interest using the mouse or other pointing device. Options for entering location criteria include:
a. Define a single point search (Figure 25) – Click an area on the map once
using the mouse to define a single point search. The latitude and longitude of
the point selection displays under the „Coordinates‟ section. The coordinates
can be toggled between Degree/Minute/Second and Decimal degrees.
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Figure 25 - Point Search
b. Define a line search (Figure 26) – To perform a line search, select two points
on the map to define a line segment. The latitude and longitude of the two points selected display under the „Coordinates‟ section.
Figure 26 - Line Search
c. Define a rectangle search (Figure 27) – Press the Shift key after starting the
selection, and continue to hold the Shift key until the correct rectangle or square is defined. This action defines the constraints of the rectangle /
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square. If you press the Shift key before making the selection, the resulting selection is added to the existing selection. The latitude and longitude of the four points selected display under the „Coordinates‟ section. To modify the rectangle, click one of the numbered points on the map and drag the point to a new location.
Figure 27 - Rectangle Search
d. Define a polygon – Click multiple times to define an area (Figure 28). As
each point of the polygon is selected, the latitude and longitude of the defined
polygon displays under the „Coordinates‟ section. To modify the rectangle,
click one of the numbered points on the map and drag the point to a new
location.
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Figure 28 - Polygon Search
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e. Define a circle – Select the Options tab on the Google Map display then click
the „Circle‟ option (Figure 29). The „Search Criteria‟ box allow entry of a circle
polygon. To define a circle, click two points on the map (Figure 30). To
modify the circle radius, click and drag one of the points to a new location.
The coordinates of the points defining the circle display under the
„Coordinates‟ section. Click “Point Polygon Tool” to turn off the Circular
Polygon tool.
Figure 29 - Circular Polygon Tool
Figure 30 - Example circle area of interest
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f. Clear Selection (Figure 31) – Click the „Clear Coordinates‟ button to clear the
search criteria from the map.
Figure 31 - Clear Selection
g. Add Map to Selection (Figure 32) – Click the „Use Map‟ button to add the
current map view as the area of interest.
Figure 32 - Add Map to Selection
The color of the screen changes, indicating the area displayed on the map as an
area of interest (Figure 33). The latitude and longitude of the map extent display
under the „Coordinates‟ section.
Figure 33 - Add Map to Selection Example
Enter Search using Address/Place 2.
The Address/Place subcomponent allows you to enter a specific address, latitude, longitude, United States or World feature, or Landsat Worldwide Reference System (WRS) Path/Row.
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a. Address – Enter a specific address; for example, in the Address: field, type
47914 252nd St, Sioux Falls, SD (Figure 34). Press Enter or click „Show‟ to
display the location on the map along with the latitude and longitude under
the „Coordinates‟ section (Figure 35).
Figure 34 - Enter Address
Figure 35 - Enter Address Location
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b. Latitude/Longitude – Enter a specific latitude/longitude; for example, type 43
43' 57" N, 096 37' 42" W (Figure 36). Press Enter or click „Show‟ to display
the location on the map and to populate the „Coordinates‟ section. (Figure
37).
Figure 36 - Enter Latitude/Longitude
Figure 37 - Enter Latitude/Longitude Location
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c. Place Name – Enter a place name. For example, type Mount Rushmore
(Figure 38) and press Enter or click „Show‟ to display the location on the map
and to populate the „Coordinates‟ section.(Figure 39).
Figure 38 - Place Name
If you are unsure of a specific location, type a placename and press Enter (or click „Show‟) to display a list of possible options. For example, type EROS and then click „Show‟ to display a list of possible places that match EROS.
Figure 39 - Place Name - Multiple Options
Click an item in the Address/Place list to show the location on the map (Figure 40).
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Figure 40 - Place Name - Multiple Option - Selected Place
d. Path/Row – Select the Path/Row option to enter WRS1 or WRS2 path row
criteria for the search.
Select the Path/Row button to display the Path/Row WRS criteria dialog box (Figure 41). Select either WRS1 or WRS2 and then type the Path and Row for the desired area. For example, select „WRS2‟ and type Path: 31 and Row: 29 to identify the center point for WRS2, Path 31, and Row 29. Click „Show‟ to identify the path/row location on the map (Figure 42).
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Figure 41 - Path/Row
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Figure 42 - Path/Row Location
e. US/World Feature – Select either a United States or World feature.
Click the „Feature‟ button to display the US/World Feature Search dialog box.
Type in a geographic feature name or select a State/Country, Feature Class,
or Feature type from a popdown menu (Figure 43).
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Figure 43 - US Feature Place name Search
For example, on the „US Features‟ tab, select „South Dakota‟ from the State dropdown, select „Airport‟ from the Feature Type dropdown, and click „Search‟ to display a list of all airports in South Dakota (Figure 44).
Figure 44 - US Feature Place name Search Results
Click the desired feature from the results list to close the dialog and display the feature location on the map (Figure 45).
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Figure 45 - US Feature Place name Selected
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Enter Search manually using Coordinates or Shapes Area Selected 3.
A second way to define an area of interest is to manually type the latitude/longitude in the Coordinates tab. To enter latitude/longitude coordinates manually, select the „Degree/Minute/Second‟ or „Decimal‟ option. This method displays how the latitude/longitude information is entered. Click „Add Coordinate‟ (Figure 46).
Figure 46 - Add Coordinate
Click „Add Coordinate‟ to display the „Add new Coordinate‟ dialog box. As shown in Figure 47, enter degrees, minutes, and seconds of a point in the dialog box. After clicking Add, the dialog disappears, the point displays on the map, and the coordinates are displayed. Use this method to enter multiple points (Figure 48).
Figure 47 - Add New Coordinate
Figure 48 - Add New Coordinate Location
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Click to delete a coordinate or click to edit a coordinate (Figure 49).
Figure 49 - Delete or Edit Coordinates
Predefined Area 4.
The „Predefined Area‟ option provides a list of predefined areas to perform a search on. The list of predefined areas includes:
States
Counties
Congressional Districts Selecting the „Predefined Area‟ tab displays the „Add Shape‟ dialog box as shown in Figure 50. Select the desired State, Area type (State, County, Congress District), and Area (County name or Congressional District name).
Figure 50 - Predefined Area - Add Shape
The outline of the selected Predefined area is then displayed on the Google Map interface (Figure 51).
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Figure 51 - Predefined Search Area
Upload ESRI Shapefile or KML file 5.
The EarthExplorer interface provides the capability to upload either an ESRI Shapefile or Google Earth Keyhole Markup Language file as search criteria.
a. Upload ESRI Shapefile
Selecting the „Shapefile‟ tab on the „Coordinates‟ dialog box displays the input form for the uploading ESRI Shapefile information for a search area (Figure 52). Shapefiles are limited to one record containing one polygon or line string with a maximum 30 points.
Figure 52 - Upload ESRI Shapefile
The ESRI Shapefile dialog box requires all of the following files: .shp, .shx, .dbf and .dbf.
b. Upload KML/KMZ file
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Selecting the „KML‟ tab on the „Coordinates‟ dialog box displays the input form for the uploading a KML or KMZ file for a search area (Figure 52). The KML or KMZ file is limited to one record containing one polygon or line string with a maximum 30 points.
Figure 53 - Upload KML/KMZ file
Browse to the desired KML or KMZ file, select the desired file, and then select the „Upload‟ file button to process the KML/KMZ file to the desired polygon search area. Figure 54 is an example KML file uploaded to EarthExplorer with 4 polygon points identified in the KML.
Figure 54 - Example uploaded KML file
The following is the example used to create the KML polygon search example.
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Figure 55 - KML Example
Dates Selected 6.
The „Dates Selected‟ option provides a method for entering a beginning and ending date range to refine the search criteria (Figure 55). You are not required to modify the default date range; however, a date range is highly recommended to reduce the number of search results returned from a search. „Search Months‟ allows you to specify which months to search within the date range specified. For example, Figure 55 shows a search range of 01/01/2008 to 12/31/2009, with selected months of April, May, June, and July.
<?xml version="1.0" encoding="UTF-8"?> <kml xmlns="http://earth.google.com/kml/2.0"> <Document> <Placemark> <Polygon> <outerBoundaryIs> <LinearRing> <coordinates> -98.2,44.4 -96.2,44.4 -96.2,42 -98.2,42 -98.2,44.4 </coordinates> </LinearRing> </outerBoundaryIs> </Polygon> <Style> <PolyStyle> <color>#a00000ff</color> <outline>0</outline> </PolyStyle> </Style> </Placemark> </Document></kml>
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Figure 55 - Dates Selected
Number of records to return 7.
The EarthExplorer interface allows you to select the number of records to return from a search. Use the „Results Options‟ tab to select the maximum number of scenes returned (Figure 56).
Figure 56 - Number of records to return
Once you enter the search criteria, click the „Data Sets‟ tab at the top or bottom of the „Enter Search Criteria‟ form.
Select Data Set(s): B.
The „Data Sets‟ tab selects which dataset(s) to search (Figure 57).
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Figure 57 - EarthExplorer Search Tabs – Data Sets
The „Data Set‟ menu (Figure 58) categorizes datasets into similar data collections. EarthExplorer uses a dynamic tree menu with expandable/collapsible links for each major data category. Click the plus sign ( ) next to the category name to expand the
list of datasets for that collection. Click the minus sign ( ) next to the category name to collapse the list.
Figure 58 - Data Set Selection Expandable View
Information about a collection is identified with the „Related Links‟ icon ( ). Information
about each dataset is identified with the Information icon ( ). Moving the mouse pointer over a dataset displays a longer description of the dataset (Figure 59).
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Figure 59 - Dataset mouse over example
The majority of the datasets are available for download from the USGS at no cost. A few datasets have a minimal fee to cover the cost of increasing the priority in
production. These datasets are identified with a dollar sign icon ( ) (Figure 60).
Figure 60 - Dataset with cost of reproduction icon
Data Set Prefilter – Select the Data Set Prefilter option to filter any datasets that do not match a user‟s search criteria (Figure 61). Apply the prefilter to narrow the list of datasets to include only those based on the area of interest, date range, and months selected on the Search Criteria tab.
Figure 61 - Data Set Prefilter
The prefilter does not guarantee results for the defined search criteria.
Click the „Clear All Selected‟ button to unselect all datasets that were selected. After selecting a dataset, click the „Additional Criteria‟ tab to enter additional criteria, or click the „Results‟ tab to execute the search and view the results for the criteria entered.
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Enter Additional Criteria: C.
The „Additional Criteria‟ tab is an optional input area that allows the entry of additional search criteria specific to the dataset(s) selected. Click the „Additional Criteria‟ tab to display the additional criteria for the first dataset selected (Figure 62). The type and number of search criteria will vary by dataset.
Figure 62 - EarthExplorer Additional Criteria Tab
To narrow the results of a search, each dataset in EarthExplorer has additional specific criteria that can be entered (Figure 63).
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Figure 63 - Example Additional Criteria form
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Select the dataset from the dropdown (if you only select one dataset, only one dataset appears in the dropdown) (Figure 64).
Figure 64 - Data Set Criteria forms
Each criteria page is different and is based on the unique dataset attributes defined for that dataset. In the following example, the specific search criteria include:
WRS Path
WRS Row
Cloud Cover
Data Category
Day Night
Landsat Scene Identifier
Click the title of a search criteria attribute link to the data dictionary for the selected data set to provide information about the particular search item.
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Figure 65 - Unique Criteria Form
Enter the additional criteria as desired to narrow the search (Figure 65). Click the „Reset‟ button to clear the page of the current dataset listed. The „Reset All‟ button clears the criteria forms for all the datasets listed. Once you enter the additional
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criteria (if any), click the „Results‟ tab near the top of the screen or the button near the bottom of the screen to execute a search.
View Search Results D.
The „Results‟ tab (Figure 66) executes a search using the search criteria and displays the results for the search criteria. The left side of the page displays the results panel with the thumbnail and textual information for each scene returned from the search. The right side of the page displays the Google Map interface with an outline of the identified area of interest (Figure 67).
Figure 66 - EarthExplorer Results Tab
Figure 67 - Example Results
The Search Results panel includes the following components:
Show Result Controls – Shows all footprints, provides browse options, adds all
page results to the shopping basket, and modifies the opacity of browse
displayed on the map
Search Results List – Displays the thumbnail, textual information, icons to view
details of each scene, view browse, and request downloads of data and other
visualization controls for each record returned from the search
Google Map Interface – Displays the search area, views footprints on the map,
and reviews a browse image for each scene through the Google Map interface
Search Result Controls 1.
The Search Results Controls (Figure 68) provide options for:
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Displaying all footprints on the map display from the search results list
Displaying all browse on the map display from the search results list
Adding all search results displayed on this page to the item basket
Figure 68 - Search Result Control
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Select „Show All Footprints‟ (Figure 69) to display footprints from the current page of results.
Figure 69 - Show All Footprints
Select „Show All Browse‟ (Figure 70) to display all browse from the current page of results.
Figure 70 - Show All Browse
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Select „Add All Results from Page to Order‟ to add all results displayed on the current page to the item selection basket. The „Browse Opacity‟ slider (Figure 71) adjusts the opacity level of the overlay browse images.
Figure 71 - Browse Opacity Example
Search Results List 2.
The Search Results List provides the controls for displaying the search results. Each search result includes a thumbnail image, attribute information on each scene, links to view browse and download, and other visualization controls.
c. Multiple Datasets
EarthExplorer searches multiple datasets (Figure 72). The results of the first dataset display in the results panel. Use the “Data Set” selection box to select and view each additional dataset.
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Figure 72 - Select Data Set Results
Figure 73 displays an example of search results.
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Figure 73 - Example Search Results
d. Overlay and Download Controls
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Each search result record includes a thumbnail image, attribute information on each scene, links to view browse and download data, and other visualization controls. Based on the dataset and user profile, some controls may not be available (Figure 74).
Figure 74 - Example Scene Level Results
The following is an overview of the overlay and download controls:
Show Footprint – Select the „Show Footprint‟ ( ) icon to display the
footprint of the selected scenes on Google Map (Figure 75). When the
footprint option is on, the footprint icon is highlighted. Click the highlighted
icon to turn off the footprint option. Multiple footprints can be selected and
displayed on the map. Each footprint displays in a different color.
Figure 75 - Footprint Overlay
Show Browse Overlay – Click the „Show Browse Overlay‟ ( ) icon to
display a preview image (browse) of the scene on the map (Figure 76).
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When the browse option is on, the browse icon is highlighted. Click the
highlighted icon to turn off the browse option. Multiple browse can be
selected and displayed on the map.
Figure 76 - Browse Overlay
Show Metadata and Browse – Click the thumbnail image or icon to
display the browse image and full metadata for the selected scene (Section
IV, f).
Download Options – Click the „Download Options‟ icon ( ) to allow registered users to download the selected data (Figure 77). Selecting the „Download Options‟ icon before registering or logging in displays the following prompt:
Figure 77 - Login before downloading
Click the „Login‟ to log in to EarthExplorer. After logging in and clicking the „Download Options‟ icon, a page similar to the following displays (Figure 78):
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Figure 78 - Download Options Dialog
Depending on the dataset, multiple products may be available for download. After selecting the desired product, and clicking “Select Download Option”, the following dialog displays (Figure 79):
Figure 79 - Download Scene
Click „Download‟ to start the download process. A „File Download‟ dialog box displays (Figure 80). Select „Save‟ to prompt for the location to save the file.
Figure 80 - Download Scene Dialog
Bulk download – Click the „Bulk Download‟ icon ( ) to allow registered users to bulk download the selected data (Figure 81). Selecting the „Bulk Download‟ icon adds the selected scenes to the Item Basket.
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Figure 81 - Bulk Download - Added to Item Basket
Selecting the „Item Basket‟ in the menu displays the „Bulk Download Item Basket‟ (Figure 82). Based on the dataset, multiple options may be available to select the type of product(s) to download.
Figure 82 - Bulk Download Item Basket
After identifying the type of product desired, select the „Proceed to Checkout‟ button to review the bulk request (Figure 83).
Bulk Download
Icon
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Figure 83 - Bulk Download Order Review
Selecting the „Submit Order‟ button submits the bulk order for processing.
Figure 84 - Bulk Download Validation
The „Bulk Download Validation‟ form (Figure 84) displays the scenes requested through the bulk download interface. To begin the download process, the Bulk Download Application (BDA) is required. First time users: please download, install and open the BDA. Returning users: please open the BDA installed on your system. You will be required to login using the EarthExplorer username and password used to complete your bulk download request.
e. Order Controls The majority of the products available through EarthExplorer for registered users are available via download. In some cases, order requests are available for selected products. Ordering products usually requires some specialized image or data processing. If a dataset has an option for ordering, the „Order Scene‟
icon ( ) displays. This option allows registered users to order or request specialized processing on certain products. The „Order Scene‟ icon is greyed out unless you are registered and logged in. In addition, a few products require a small fee for the cost of processing.
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Click the „Order Scene‟ icon to add the selected scene to the „Item Basket‟. As each scene is added to the ‘Item Selection‟ basket on the menu bar, the number of scenes added to the basket is updated and the „Order Scene‟ icon changes to green (Figure 85).
Figure 85 - Order Scene
In some cases, additional ordering parameters may be required to complete an order. To view items in the Item Basket, click „Item Basket‟ in the menu bar or the „View
Item Basket‟ button at the bottom of the results page (Figure 86).
Figure 86 - Item Basket Example
In the following example, the first item is for an Aerial Photo Single Frame scanning request. There is one option for the micron size of processing parameters. The cost of scanning is $30 per scene. The second item is a request for a Landsat 7 Enhanced Thematic Mapper Plus (ETM+) Level 0, Scan Line Corrector (SLC) OFF On-Demand product. Processing parameters are not available for this product; this item is at no cost. The overall cost is $30 for the scanned product with a $5 handling fee per order (Figure 87).
Order Icon
Item Basket
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Figure 87 - Item Basket
Click „Submit Order‟ to submit the order for processing. You will receive a confirmation email. The Checkout Summary page displays and you can print or save this summary for your records (Figure 88).
Figure 88 - Checkout Summary
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Ordering Aerial Photography provides a method for downloading scenes from an
entire roll of film. Select the roll icon ( ) to „View Related Scenes‟ to display all of the images that were acquired for the selected scene‟s roll (Figure 89). These results will show all frames on a roll of film, including untitled images without coordinates.
Figure 89 - Roll View
For each scene on the roll, you can download, add to a bulk order, or order images.
f. Browse and Metadata
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EarthExplorer displays a thumbnail image, browse, and detailed metadata information for each scene returned from a search (Figure 90).
Figure 90 - Example Scene Level Results
Show Browse and Metadata – On the thumbnail, mouse over to display the „Show Browse and Metadata‟ (Figure 91).
Figure 91 - Show Browse and Metadata
Click the thumbnail image or icon to display the reduced resolution browse image and full metadata for the selected scene (Figure 92).
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Figure 92 - Browse and Metadata View
The Browse and Metadata view includes the following:
The Browse image of the selected scene displays at the top center of the lightbox display. If multiple browse areas are available for the image, an image control is displayed to allow viewing multiple browse images.
Figure 93 is an example of multiple browse for an image. Each available image displays as a thumbnail in the lower left corner of the display. To switch between browse, click the arrow (<>) or click one of the thumbnails at the lower left corner for the page.
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Figure 93 - Multiple Browse Display Example
Data Set Attributes – Each dataset has unique attributes describing the
metadata associated with the scene. Each attribute has a hyperlink to the
data dictionary to provide detailed information on that particular dataset.
Attribute Value – The information associated with each attribute.
Open New Window – Click „Open New Window‟ to display the selected
browse in a separate window (Figure 94).
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Figure 94 - Open New Window - Display Browse
FGDC Format – Click the „FGDC Format‟ button at the bottom of the Data
Set Attributes screen to display the metadata in the Federal Geographic
Data Committee (FGDC) format. Scroll down to the bottom of the FGDC
view and Click „Table Format‟ to return to the „Browse and Metadata‟ view
(Figure 95).
Figure 95 - FGDC Format
g. Search Results Controls
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The EarthExplorer user interface controls on the Search Results include:
Scroll bar – Click to view additional items returned from the search.
Displaying X – XX of XX - Results Per Page – The default „Results Per
Page‟ is ten records. To show more results on the page, change the
„Results Per Page‟ in the „User Profile‟ to a higher number. The „User
Profile‟ requires you to be registered. Additional information on the
„User Profile‟ is covered in more detail in Section III Registration and
Profile.
Information icon ( ) – Click to see the number of
records in the dataset. Figure 96 provides an example. In this case,
the search returned 50 records but the number of items in the dataset
is 2,570 (Figure 97).
Figure 96 - Default Search Results Returned = 100
Figure 97 - Total Search Results of query = 2,570
To modify the number of search results, refer to the „Profile‟ on the EarthExplorer menu. Select the „Results per Page‟ in the profile to modify the „Results Per Page:‟ on the „Update User Interface Options‟ panel (Figure 98).
Figure 98 - Search Criteria - Number of records to return
Paging controls include the following:
Page Number ( ) - Selects a different page of results
Next - Displays the next page
Previous - Displays the previous page
First - Displays the first page
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Last - Displays the last page
h. Export Metadata EarthExplorer provides an option to „Export Metadata‟ results in a number of popular formats (Figure 99).
Figure 99 - Export Options
To export metadata, select the „Export Metadata‟ button. Select the „Include Browse‟ option to include browse images with the metadata. The following metadata formats are supported:
Delimited - Generates a .txt file, with the delimiter of choice (comma or
pipe) with the returned, non-excluded results from a search. The
information includes the full metadata as displayed in the lightbox.
KML - Generates a .kml file with the returned, non-excluded results from a
search. The information in this export includes the full metadata as
displayed in the standard metadata dialog. The KML 2.2 standard is used
for this KML file. This export format is not available for result sets larger
than 1000 results.
KMZ - Generates a .kmz file with the returned, non-excluded results from
a search. The information in this export includes the full metadata as
displayed in the standard metadata dialog. The KML 2.2 standard is used
for this KMZ file. This export format is not available for result sets larger
than 1000 results.
FGDC - Generates a FGDC format file in ISO 19115 format.
Full Results (CSV) - Allows a user to enter the number of records to
return. The export function uses this number, along with the current
search criteria to generate a csv formatted export of search results. The
metadata in this export includes the metadata returned on the search
result screen. This export does not take into consideration excluded
scenes.
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Shapefile - Generates a .zip file with the returned, non-excluded results
from a search. Files included in the .zip file include a .shp, .shx, .dbf, and
.prj. Shapefiles are generated using the ERSI standards. Limited
metadata is included with this export. This export is not available for result
sets larger than 1000 results.
Click to exclude a scene from the metadata export. Click
to return the excluded scenes to the list.
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Standing Request 3.
The „Standing Request‟ function allows registered users to run searches for new acquisitions, in the background, using the same search criteria. The Submit Standing Request button is only visible if you are logged in to EarthExplorer.
The „Submit Standing Request‟ button is at the bottom of the search results list panel (Figure 100).
Figure 100 - Submit Standing Request
Select the „Submit Standing Request‟ button to display the „Save as Standing Request‟ form (Figure 101).
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Figure 101 - Standing Request Form
Enter the following criteria for a standing request:
Name – Enter a name for this request
Frequency – Select Daily, Weekly, Monthly, or Quarterly, which
determines how frequent the search runs
Date range for the standing request will run.
o Start Date – Select the start date for the standing request
o End Date – Select the end date for the standing request
Search date range.
o Start Date – Select the start date for the search date
o End Date – Select the end date for the search date
Click the „Submit‟ button to execute the standing request.
To review standing requests, click „Profile‟ on the EarthExplorer Main menu bar (Figure 102).
Figure 102 - Manage Criteria
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This action displays the „Profile Menu‟. Click „Standing Request‟ on the Profile menu to see the list of entered standing requests (Figure 103).
Figure 103 - Standing Request
The Standing Request module sends you an email when a new acquisition matches the search criteria. You can then review metadata and browse for the returned scenes.
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Appendix
Acronym Description
API Application Programming Interface
DMS Degrees, Minutes, Seconds
DOI Department of Interior
EE EarthExplorer
EROS Earth Resources Observation and Science Center
ETM+ Enhanced Thematic Mapper Plus
FGDC Federal Geographic Data Committee
FOIA Freedom of Information Act
GB Gigabyte
GHZ Gigahertz
GloVis USGS Global Visualization Viewer
GUI Graphical User Interface
HDDS Hazards Data Distribution Systems
HTTPS Hypertext Transfer Protocol Secure
KML Keyhole Markup Language
L1G Level 1 Systematic Correction
L1T Level 1 Standard Terrain Correction
LDCM Landsat Data Continuity Mission
MB Megabyte
Mbps Megabit per Second
OGC Open Geospatial Consortium
PC Personal Computer
PHP Hypertext Preprocessor
RSS Really Simple Syndication
SLC Scan Line Corrector
USGS United States Geological Survey
WRS Worldwide Reference System
